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sideeffects / HoudiniEngineForUnreal-v2

Houdini Engine Plugin for Unreal Engine 4 - Version 2
http://www.sidefx.com/unreal
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Crash when translating ue4-mesh with multiple materials and different textureparameters to houdini #87

Closed WWWiemer closed 3 years ago

WWWiemer commented 3 years ago

Steps to reproduce:

  1. Create a HDA with any object path input
  2. Prepare a mesh with two material-slots and two materials, that each have a texture-parameter, that is named differently (e.g. texture1 and texture2)
  3. In UE4 use the HDA in a scene and assign the prepared mesh as a geometry-input
  4. try recooking

Tested with PluginV2 Houdini Version: 18.0.597 Houdini Engine Version: 3.4.0 Unreal Version: 4.24.0

and Houdini Version: 18.5.408 Houdini Engine Version: 3.5.1 Unreal Version: 4.24.0

Provided plugin and HDA for easier reproduction. CrashTest.zip

punaparta commented 3 years ago

We had the same crash recently, but i never figured it is the texture-parameter part. Good that someone figured out whats the reason.. I noticed it happens on objects with multiple materials, but not always.. I was hunting the cause of this for ages :D

eliiik commented 3 years ago

I just comment out the crash part of the source code, and it doesn't crash again :) btw, the crash point image

dpernuit commented 3 years ago

Hi, Yes, the material parameters marshalling caused a few issues, and has currently been disabled.